Stove.



E. W VEST.

STOVE.

APPLICATION FILED MAR. 9 ms.

Patented Dec. 31, 1918.

2 SHEETS-SHEET I.

y W Abbys E. W. VEST.

STOVE.

APPLICATION FILED MAR. 9. 91s.

Patented Dec. 31, 1918.

2 SHEETSSHEET 2.

EUGENE W. VEST, OF ST. LOUIS, MISSOURI.

STOVE.

Application filed March 9, 1916.

To all whom it may concern:

Be it known that I, EUGENE W. Vns'r, a citizen of the United States ofAmerica, a resident of the city of St. Louis, State of Missouri, haveinvented certain new and useful Improvements in Stoves, of which thefollowing is a full, clear, and exact description, reference being hadto the accompanying drawing, forming a part of this specification.

My invention relates to stoves, the present improvement being moreparticularly intended for incorporation in cooking stoves or ranges, butalso suitable for use in heating stoves and furnaces.

One of the objects of the present invention is to provide a fire-boxlining capable of withstanding or resisting the destructive eifects ofchanges in temperature in a firebox, due to expansion and contraction.in the lining and the stove elements closely associated with the lining.Another object of the invention is to so deliver air to a fire-box as toaffect combustion of combustiole gases to a maximum degree.

Figure I is a front elevation of a cooking stove or range having myimprovements incorporated therein.

Fig. II is an enlarged horizontal section taken on line IIII, Fig. Ithrough the dampers of the stove.

Fig. III is an enlarged vertical transverse section taken on lineIIIIII,.Fig. I, through the air box and auxiliary damper of the stove.

Fig. IV is a top or plan view of a fragment of the fire-box lining. aFig. V is a perspective view of one of the cap sections of the fire-boxhning inverted.

Fig. VI is a perspective view of one of the wall sections of thefire-box lining.

Fig. VII is a vertical longitudinal section through the end of the stovecontaimng the fire-box.

Fig. VIII is a perspective view of the air box, which extendstransversely of the stove,- detached from its support.

Fig. IX is a vertical section through a heating stove or furnace havingmy improvements incorporated therein.

Referring first to Figs. I to VIII, inclus1ve:

1 designates the front wall of the cooking stove I and III), 2 is an endSpecification of Letters Patent.

Patented Dec. 31, 1918.

Serial No. 83,095.

wall at the end of the stove containing the fire-box (see Fig. VII), and3 is the top of the stove. 4 as seen in the accompanying drawings is anend wall of the oven of the stove and in the subsequent description thiswill be considered as the oven wall although it might be an inner wallmember of the stove aside from theoven. j

The fire-box A and the ash compartment B are located between the sidewall 2 and' frame 5 in proximity to but spaced from the wall 4, and alsocap sections partly superposed above the wall sections 7. There is aseries of the lining wall sections 7 ex tending throughout the length ofthe firebox A and at the back of each of the sections are lugs orprojections 8 which are opposed to the wall 4, as seen in Fig. VII. Atthe upper end of each section 7 adjacent to its side edges are verticalears 9 between which is a passageway 10, this passageway being inclinedforwardly and downwardly from the rear portion of the section. The capsections previously mentioned are denoted by the reference character 11.As seen in Fig. VII, the cap sections rest in part upon the top of theoven of the stove and in part upon the lining wall sections 7. Theforward ends of the cap sections are in the form of downturned lips 14which overhang the wall lining sections 7 and said cap sections areprovided back of said lips with curved seats 12 in which the ears 9 ofthe sections 7 rest. Back of said seats, adjacent the side edges of thecap sections, are depending. lugs 13 between which and the lips 14 thesections 7 are loosely confined. The cap sections 11 are interlockedwith each other at their inner ends by providing the sections at theirrear corners with notches 15 and tongues 16. These tongues and notchesare fitted to each other when the cap sections are assembled, as seen indotted lines Fig. IV. Some of the cap sections are provided at theirrear corners with upwardly extending studs 17 which receive theengagement of clips 18 riveted or otherwise suitably secured to thestove oven, as seen in Figs. IV and VII. The overhanging arms of theseclips are provided with lugs 19 arranged in opposition to the lugs 17 onthe cap sections. The clips resist forward movement of the cap sections11, due to the opposing lugs 17 and 19 and they perform this office insuch manner as to permit limited play of the cap sections as may berequired due to contraction or expansion of the co-related elements.

It will be apparent that by fitting the lining sections 7 and 11 to eachother, as has been described, it is possible for these sections topartake of movement independently of each other, and, consequently,expansion and contraction of the material of which they are composed maytake place without injury to the sections as would occur if they wereintegrally connected.

I will now proceed to description of the means for admitting air to thefire-box to cause complete combustion of the combustible gases producedin such fire-box.

C designates an air box secured to the wall 1 and located in theash'compartment B, the box being open at its top to permit the ascent ofair therefrom into the space back of the lining sections 7, in orderthat such air may enter the firebox through the passageways 10 at theupper ends of said lining sections. The air box, the structure of whichis most clearly illustrated in Fig. VIII, comprises a side wall 20containing apertures 21, a rear end wall 22 and a bottom wall 23, thetwo last mentioned walls being closely fitted against the wall 4. Theair box is open at its front end which is fitted against the front wall1 of the stove. The interior of the-air box is subdivided by ahorizontal partition 24: into an upper compartment 0 and a lowercompartment c, the said partition being partly cut away throughout themost of its length to permit communication between the lower and uppercompartments. The lower compartment 0 is not open to the ash compartmentB, but the upper compartment has communication with said ash compartmentthrough the apertures 21. These apertures are controlled by an apertureddamper 25 which is slidably fitted to the side wall of the air box andis furnished with a handle rod 26 which extends through the front Wallof the stoves and is preferably supplied with a handle 27 (se'eFigs. IIIand VIII). 28 designates a slidable auxiliary damper plate atthe frontof the stove adapted to control the admission of air into the front endof the air box C directly from the exterior of the stove. The damperplate 28 is fitted to a damper frame 29 attached to the front wall 1 atthe front end of the air'box C (Figs. I to III inclusive), and saidplate is provided at its rear side with a guide stud 30 operable betweena pair of horizontal guides 31 forming a part of the damper frame 29i Atthe front of the damper plate is an operating knob 32. The damper justdescribed is an auxiliary damper and is intended to be opened only forthe promotion of complete combustion in maintaining a low fire in thefire-box of my stove.

The admission of air for promoting complete combustion, when other thanlow fire is desired, is admitted to the ash compartment B through anapertured damper frame 33 secured to the front wall of the stove infront of the ash compartment.

the ash compartment and become heated before entering the air box fordelivery to the fire-box, and, owing to the importance of this, Iprovide a connection between the two damper plates 34f and 28. Thisconnection, in the form illustrated inthe drawings, com

prises a connecting rod 38 pivotally fitted to the knob 37 of the maindamper plate at one end and having at its other :end a book 39 whichengages the knob32 on the auxiliary damper plate. V'Vhen a full fire isbeing burned in the'fire-box of my stove the main damper at the front ofthe stove is opened so that the apertures in the damper plate3 iframe 33and air from the exterior of the stove will be then admitted-intotheash'compartment B, to rise therein towardthebottom of the fire-box. Theapertures 21 in the air box C are located only slightly beneath thegrate of thefire-box and, consequently, the air becomes quite hot sothatit is in' the best condition to promote combustion'before it passesthrough the apertures 21 into the upper compartments 0 of the air box.It will'be understood that the damper 25 is open at this time to permitthe described passage of the heated air into the compartment 0. The airentering said air box compartment rises immediately into the space backof the fire-box lining where'it is further heated and then moves throughthe passageways 10in the wall lining sections 7 to become mixedimmediately with the products of combustion in the fire-box. The damper25 provides means for the regulation of the supply of the requisitequantity of air through the air box and therefrom to the fire-box, itbeing obvious that'this dampermay-be adjusted to any required positionso that just the proper amount of air will-be delivered through'the airbox to the top of a bed of fuel burning in will register with theapertures in the damper V the fire-box and from which the gases ofcombustion rise. The damper is, therefore, a very important feature inthe air delivery means of my stove.

hen it is desired to maintain a low fire in my stove the air to supportcombustion is admitted to the air box C by opening the auxiliary damperat the front end of the air box. This auxiliary damper is opened byclosing the main damper at the front of the stove which results in themovement of the connecting bar 38 and the shifting of the auxiliarydamper plate :28 in a lateral direction simultaneously with the closingof the main damper. It is desirable to open the auxiliary damper onlyslightly and for this reason the connecting bar 38 is provided with anelongated notch in which the knob 32 of the auxiliary damper plate isseated. This elongated notch permits of partial closure of the maindamper before any movement is imparted to the auxiliary damper plate 28and the auxiliary damper plate is therefore moved to a degreecorresponding to the final closing movement of the main damper.

In Fig. IX I have shown my improvements incorporated in a heating stove.In this heating stove construction the fire-box lining wall sections 7are constructed similarly to the previously described lining wallsections 7 and rest upon the grate 5 The wall sections of the lining aresurmounted by cap sections 11 which are loosely con nected to the shell1 of the stove and seat loosely connected at their lower ends upon thecars at the upper ends of the sections 7 the lower ends of the capsections being grooved to receive the upper ends of the sections 7 andoverhanging the air passageways 10 through which air enters the firebox.Beneath the fire-box of the heating stove is a circular air box C havinglower and upper air compartments separated by the horizontal partition24. The shell 1 is provided with a main damper (not shown) for theadmission of air into the ash compartment beneath the fire-box in orderthat it may enter the upper compartment of the air box and move into thefire chamber as in the previously described construction. Provision isalso made for the supply of air into the lower compartment of the airbox to pass therefrom to the chamber when the main damper is closed anda low fire is being maintained in the fire chamber.

I claim 1. An air box open at the top comprising a side wall havingapertures in its upper part, a horizontal partition cutaway at its inneredge and located beneath the apertures a rear wall, a bottom wall and anapertured damper slidingly fitted to the side wall of the air box andprovided with an operating rod.

2. An air box open at the top comprising a side wall having apertures inits upper part, a horizontal partition cutaway at its inner edge andlocated beneath the apertures, a rear wall, a bottom wall, an apertureddamper slidingly fitted to the side wall of the air-box and providedwith an operating rod, a damper frame at the front end of the air-boxand a slidable auxiliary damper plate fitted to the damper frame.

EUGENE W. VEST.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, 13.0.

